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usr / src / contrib / llvm-project / llvm / lib / DebugInfo / PDB / Native /

📁 ..
📄 DbiModuleDescriptor.cpp(2.5 KB)
📄 DbiModuleDescriptorBuilder.cpp(6.63 KB)
📄 DbiModuleList.cpp(8.3 KB)
📄 DbiStream.cpp(12.8 KB)
📄 DbiStreamBuilder.cpp(14.82 KB)
📄 EnumTables.cpp(1.33 KB)
📄 GSIStreamBuilder.cpp(17.23 KB)
📄 GlobalsStream.cpp(6.56 KB)
📄 Hash.cpp(2.39 KB)
📄 HashTable.cpp(2.55 KB)
📄 InfoStream.cpp(3.94 KB)
📄 InfoStreamBuilder.cpp(2.67 KB)
📄 InjectedSourceStream.cpp(2.31 KB)
📄 ModuleDebugStream.cpp(4.74 KB)
📄 NamedStreamMap.cpp(4.2 KB)
📄 NativeCompilandSymbol.cpp(2.22 KB)
📄 NativeEnumGlobals.cpp(1.87 KB)
📄 NativeEnumInjectedSources.cpp(4.05 KB)
📄 NativeEnumLineNumbers.cpp(1.44 KB)
📄 NativeEnumModules.cpp(1.36 KB)
📄 NativeEnumTypes.cpp(2.62 KB)
📄 NativeExeSymbol.cpp(3.25 KB)
📄 NativeFunctionSymbol.cpp(2.12 KB)
📄 NativeLineNumber.cpp(1.88 KB)
📄 NativePublicSymbol.cpp(1.92 KB)
📄 NativeRawSymbol.cpp(14.98 KB)
📄 NativeSession.cpp(12.36 KB)
📄 NativeSourceFile.cpp(1.47 KB)
📄 NativeSymbolEnumerator.cpp(4.24 KB)
📄 NativeTypeArray.cpp(2.6 KB)
📄 NativeTypeBuiltin.cpp(1.67 KB)
📄 NativeTypeEnum.cpp(12.55 KB)
📄 NativeTypeFunctionSig.cpp(7.3 KB)
📄 NativeTypePointer.cpp(6.41 KB)
📄 NativeTypeTypedef.cpp(1.05 KB)
📄 NativeTypeUDT.cpp(6.93 KB)
📄 NativeTypeVTShape.cpp(1.42 KB)
📄 PDBFile.cpp(16.2 KB)
📄 PDBFileBuilder.cpp(11 KB)
📄 PDBStringTable.cpp(4.53 KB)
📄 PDBStringTableBuilder.cpp(6.88 KB)
📄 PublicsStream.cpp(3.89 KB)
📄 RawError.cpp(2.13 KB)
📄 SymbolCache.cpp(22.39 KB)
📄 SymbolStream.cpp(1.4 KB)
📄 TpiHashing.cpp(4.32 KB)
📄 TpiStream.cpp(7.85 KB)
📄 TpiStreamBuilder.cpp(6.32 KB)

Editing: PublicsStream.cpp

//===- PublicsStream.cpp - PDB Public Symbol Stream -----------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// The data structures defined in this file are based on the reference
// implementation which is available at
// https://github.com/Microsoft/microsoft-pdb/blob/master/PDB/dbi/gsi.h
//
// When you are reading the reference source code, you'd find the
// information below useful.
//
//  - ppdb1->m_fMinimalDbgInfo seems to be always true.
//  - SMALLBUCKETS macro is defined.
//
// The reference doesn't compile, so I learned just by reading code.
// It's not guaranteed to be correct.
//
//===----------------------------------------------------------------------===//

#include "llvm/DebugInfo/PDB/Native/PublicsStream.h"
#include "llvm/ADT/iterator_range.h"
#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
#include "llvm/DebugInfo/MSF/MappedBlockStream.h"
#include "llvm/DebugInfo/PDB/Native/RawError.h"
#include "llvm/Support/BinaryStreamReader.h"
#include "llvm/Support/Endian.h"
#include "llvm/Support/Error.h"
#include <algorithm>
#include <cstdint>

using namespace llvm;
using namespace llvm::msf;
using namespace llvm::support;
using namespace llvm::pdb;

PublicsStream::PublicsStream(std::unique_ptr<MappedBlockStream> Stream)
    : Stream(std::move(Stream)) {}

PublicsStream::~PublicsStream() = default;

uint32_t PublicsStream::getSymHash() const { return Header->SymHash; }
uint16_t PublicsStream::getThunkTableSection() const {
  return Header->ISectThunkTable;
}
uint32_t PublicsStream::getThunkTableOffset() const {
  return Header->OffThunkTable;
}

// Publics stream contains fixed-size headers and a serialized hash table.
// This implementation is not complete yet. It reads till the end of the
// stream so that we verify the stream is at least not corrupted. However,
// we skip over the hash table which we believe contains information about
// public symbols.
Error PublicsStream::reload() {
  BinaryStreamReader Reader(*Stream);

// Check stream size.
  if (Reader.bytesRemaining() <
      sizeof(PublicsStreamHeader) + sizeof(GSIHashHeader))
    return make_error<RawError>(raw_error_code::corrupt_file,
                                "Publics Stream does not contain a header.");

// Read PSGSIHDR struct.
  if (Reader.readObject(Header))
    return make_error<RawError>(raw_error_code::corrupt_file,
                                "Publics Stream does not contain a header.");

// Read the hash table.
  if (auto E = PublicsTable.read(Reader))
    return E;

// Something called "address map" follows.
  uint32_t NumAddressMapEntries = Header->AddrMap / sizeof(uint32_t);
  if (auto EC = Reader.readArray(AddressMap, NumAddressMapEntries))
    return joinErrors(std::move(EC),
                      make_error<RawError>(raw_error_code::corrupt_file,
                                           "Could not read an address map."));

// Something called "thunk map" follows.
  if (auto EC = Reader.readArray(ThunkMap, Header->NumThunks))
    return joinErrors(std::move(EC),
                      make_error<RawError>(raw_error_code::corrupt_file,
                                           "Could not read a thunk map."));

// Something called "section map" follows.
  if (Reader.bytesRemaining() > 0) {
    if (auto EC = Reader.readArray(SectionOffsets, Header->NumSections))
      return joinErrors(std::move(EC),
                        make_error<RawError>(raw_error_code::corrupt_file,
                                             "Could not read a section map."));
  }

if (Reader.bytesRemaining() > 0)
    return make_error<RawError>(raw_error_code::corrupt_file,
                                "Corrupted publics stream.");
  return Error::success();
}

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Editing: PublicsStream.cpp

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